A nuget package is available on: https://www.nuget.org/packages/ChannelAccess/
The following code will read a value of a channel (ARIDI-PCT:CURRENT) and print it out on the screen
using EpicsSharp.ChannelAccess.Client;
using System;
namespace ConsoleApp4
{
class Program
{
static void Main(string[] args)
{
var client = new CAClient();
// Required if you use an EPICS Gateway, otherwise skip the line
client.Configuration.SearchAddress = "sls-cagw:5062";
var channel = client.CreateChannel<string>("ARIDI-PCT:CURRENT");
// Synchronously read a channel and shows the value. If the channel doesn't exist an exception will be thrown.
Console.WriteLine(channel.Get());
}
}
}The second example will instead "monitor" the value and call the callback every time the value changes:
using EpicsSharp.ChannelAccess.Client;
using System;
namespace ConsoleApp4
{
class Program
{
static void Main(string[] args)
{
var client = new CAClient();
// Required if you use an EPICS Gateway, otherwise skip the line
client.Configuration.SearchAddress = "sls-cagw:5062";
var channel = client.CreateChannel<string>("ARIDI-PCT:CURRENT");
// Will connect (if possible) to the channel and receive the value in the callback. In case of
// disconnection the channel will try to reconnect automatically
channel.MonitorChanged += (chan, val) =>
{
Console.WriteLine(val);
};
Console.ReadKey();
}
}
}An EPICS server value can either update at regular intervals or "on demands" when a new value is set to the channel. The following example shows a regular interval at 10Hz (10x per seconds):
using EpicsSharp.ChannelAccess.Server;
using System;
namespace ConsoleApp4
{
class Program
{
static void Main(string[] args)
{
var server = new CAServer();
var channel = server.CreateRecord<EpicsSharp.ChannelAccess.Server.RecordTypes.CADoubleRecord>("MYREC:VAL");
channel.Scan = EpicsSharp.ChannelAccess.Constants.ScanAlgorithm.HZ10;
channel.PrepareRecord += (sender, evt) =>
{
channel.Value = DateTime.Now.ToOADate();
};
Console.ReadKey();
}
}
}